Patents by Inventor Shi Pinghua

Shi Pinghua has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Three wheel rollator
    Patent number: D943464
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: February 15, 2022
    Assignee: Drive DeVilbiss Healthcare
    Inventor: Shi Pinghua
  • Three wheel rollator
    Patent number: RE49916
    Type: Grant
    Filed: July 12, 2023
    Date of Patent: April 16, 2024
    Assignee: Drive DeVilbiss Healthcare
    Inventor: Shi Pinghua